Hi, you can’t put shortcodes in the POIs but you can create a map and then display it elsewhere in the site, e.g. [mappress mapid="1234"].
The geocoding functionality is most useful if you already have your data stored somewhere, for example if you have a custom form with an existing address field. I wouldn’t bother for 8 locations.
I’m not sure how the site is meant to look but it sounds like you would want 8 separate posts, with 1 location per post. Then you can use the shortcode to reference those 8 maps separately or a mashup to display them together.